Combined stove-cover and gas-burner



' No. 622.894. Patented Apr. n, |999.

A. GRIFFITH.

COMBINED STOVE COVER AND GAS BURNER.

(Application led Mar. 23, 1898.)

(No Model.)

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[lill/[[1114 UNITED STATES PATENT EEICE.

AMENZO GRIFFITH, OF SPRINGFIELD, MASSACHUSETTS.

COMBINED STOVE-COVERAND GAS-BURN ER.

SPECIFICATION forming part of Letters Patent No. 622,894, dated April 11, 1899.

Application filed March 23, 1898. Serial No. 674,950. (No model.)

To all whom, it may concern,.-

Beit known that I, AMENZO GRIFFITH, a citizen of the United States of America,and a resident of Springfield, inthe county of Hampden and State of lvlassachusetts,have invented certain new and useful Improvements in a Combined Stove-Cover and Gas-Burner, of which the following is a full, clear, and exact description.

This invention relates to an improved gasburning appliance for an ordinary cook stove or range, the object being to provide a cover, which is adapted to serve as one of the covers for a stove-hole or to be substituted for one of the stove-hole covers, with a burner having a passage communicating therewith for the introduction of a combustible gas or of admixed gas and air for combustion directly at the cover, and all in a simple and inexpensive manner and also in a manner so as not to obstruct or interfere with the stove for its ordinary coal or wood burning capabilities or to be itself interfered with by the provisions in the stove whereby it is adaptable for the ordinary use. i

The invention consists in the combination, with a stove-top having an opening therein, as usual, of a plate or cover to fit in said opening and constructed with a burner having a passage for conveying gas thereto.

The invention consists in a combined stovecover and burn er constructed substantially as hereinafter described, and set forth in the claims.

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The invention, furthermore, consists in the construction and formation of parts to constitute an approved form of the stove-cover burner, all substantially as will hereinafter i fully appear, and be set forth inthe claims.

erence indicate the same parts or features in all the views.

Arepresents a cover or lid to fit in one of the usual holes in the top of a stove, said cover being constructed with a cup-shaped depression 10 below its top, having through its side wall, at or near its upper edge, a series of radial outwardly-opening gas-openings 11 11, with passage b leading radially to the lower portion of the depression-chamber from at or beyond the edge of the cover, said cover proper, the circular wallsurrounding the depression l0, and that surrounding or within which is the said passage b being all integrally formed in a single casting,and the casting is, furthermore, constructed with the comparatively deep annular groove or trough d outside the circular wall of the chamber depression 10, the outer wall of which trough is upwardly and outwardly Haring, as shown at 12.

The chamber depression 12 is overlaid by the circular plate f, which constitutes the top of the burner-chamber, the screw g holding it in place.

The integrally-cast wall of the passage b is comprised in a portion 13 of the casting above and near the margin of the cover A, the inwardly-leading passage therethrough being thence continued obliquely downward to a point below the under side of the cover, thence continued more or less nearly horizontally and connecting with the depressionchamber 10 upwardly through the bottom thereof.

The protuberance 13 of the casting at the cover margin has the opening 15 therein screw-threaded, receiving the pipe-section 7L, the outer end of which has the contracted extension h2, provided with the closely-fitted metallic plug fi, having the axial needle-hole j therethrough for the admission from the gassupply of a suitable restricted quantity of the gas into the burner ingress-passage. In advance of the centrally-perforated plug t' the pipe-section has a double series of radiallyentering air-ingress holes m m. To the contracted outer end of the said pipe-section h connection is made with a exible or other gas-supply pipe n, which may convey the gas to the burner-cover from a gasixture or any suitable gas-supply.

The gas entering, in conjunction with atmospheric air, into the burner-chamber v10 thence passes outwardly through the radial openings surrounding the burner-top and burns inA an annular body in and above the surrounding trough or grooved, formed in the cover, the upwardly-flaring outer wall thereof upwardly deliectin g the fiame,where by it may impinge against a kettle, pan, or whatever may be supported thereover to be heated, and in order that the free combustion of the gaseous fuel may not be obstructed the article or receptacle to be heated is supported above the top surface of the cover upon the spider-frame, (indicated at 00,) which may be of castiron separately made and placed on the cover or it may be cast as an integral portion of the burner-cover.

It will be perceived on consideration of the cover-burner described that its cost beyond an ordinary stove-cover is not extensive, that it is applicable upon the common cook-stove without any adaptation or modification of the latter being required, that it can be employed as a supplement to the heating provisions constituted by the coal or wood being burned in the stove or in substitution thereof, and that its use is entirely safe, economical, and, as demonstration has proved, satisfactory and efficient in expeditiously acquiring an ample heat.

Having thus described my invention, what I claim, and desire to secure by Letters Pat- 1. An imperforate stove-hole cover c011- structed with a depression in its upper surface, such depression containing a burnerchamber having openings leading to the top of the cover, and a conduit formed as a part of the cover leading into such burnerchamber, substantially as described.

2. A combined stove-cover and burner constructed with a central depression-chamber, completely separated from the under side of the cover having a top Wall, and outwardlyopening passages, andwith an annular upwardly-opening depression surrounding the depression-chamber, and having a passage for supplying gas leading into said chamber, substantially as described.

3. A combined stove-cover and burner constructed with a central depression-chamber 10, entirely closed at its bottom, having a top wall, and a series of outwardly-opening passages; and with an annular trough or groove in the top of the cover surrounding the depression-chamber, and into which said passages lead, the outer wall of which is outwardly and upwardly liaring; and a passage for conveying gasinto said chamber, substantially as described.

4. A combined stove-cover and burner constructed with a chamber within its margin, which is entirely closed at its bottom, provided with a series of burner-openings leading outwardly therefrom and with a protuberance at a marginal portion of the cover having an opening leading thereinto which is' continued in a passage leadinginwardly below the cover to communication into the bottom of said chamber, and a gas-supplying-pipe connection connecting with said marginal opening, substantially as described.

5.- The combined stove-cover and burner shown and described, the saine consisting of the central depression-chamber l0, entirely closed at its bottom, having at its top the se ries of sidewise burner-openings, and with the surrounding annular trough depression in the top of the cover, the outer wall of which is outwardly and upwardly arin g; and to which said sidewise openings lead, provided with marginal protuberance, 13, having the threaded opening which iscontinued within the pas` sage-surroundin g wall to communication with the said chamber, a'll integrally cast; the

burner top plate f, the pipe-section h screwing into the opening in said marginal protuberance, having the outer contracted portion provided therein with the plug i having the minute opening j therethrough, and said pipe-section having one or more air-entering openings m in advance of said plug, for the purposes set forth.

6. A combined stove-cover and burner constructed with a burner-chamber below the cover-top which is completely inclo'sed at its under side and having a top wall, with an annular upwardly-opening depression surrounding `said burner-top and having outwardly-opening passages leading through the top portion of the burner to said depression, a passage for supplying gas leading into said chamber and a frame or spider a; provided for the top of the cover-burner, substantially as described.

7. As a new article of manufacture, an im perforate stove-cover having-a depression containing a burner-chamber, having openings leading to the top of said stove-cover, and a conduit, formed as an integral part of the said cover, for conveying combustible gas from the outside of the cover into the burner chamber, combined with a pipe connected to said conduit and which is perforated at its outer end, and to which a liexible tube for conducting the gas is attached,substantially as specified.

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8. As a new article of manufacture, an imla depression in .its top, and in which the burner-chamber is located, the top wall or cover of which chamber is placed upon the same plane as the top o f the stove-hole cover,

622,'e94 Y e 'said burner having' a series of openings leading from said chamber to the top of the cover, and a conduit connected with said burnerchamber for conveying combustible gas thereinto, and which conduit forms a part of the cover, substantially as set forth.

10. An imperforate stove-hole cover provided With a depression in its top, and in which depression the burner-chamber is 1ocated, and which top is placed upon the same plane as that of the stovelcover, and forms -a separate part thereof, the burner-chamber having openings leading to the top of the 

